Narrow your search
Listing 1 - 5 of 5
Sort by

Book
Horror vacui: de eeuw van de luchtpomp, 1650-1750
Author:
ISBN: 9062920926 Year: 1991 Publisher: Leiden


Multi
The Priority of Locomotion in Aristotle's Physics
Author:
ISBN: 9783525253069 3525253060 9783647253060 3647253065 3666253067 Year: 2014 Volume: 196 Publisher: Göttingen Vandenhoeck & Ruprecht

Loading...
Export citation

Choose an application

Bookmark

Abstract

Die Arbeit setzt sich eingehend mit Aristoteles' These auseinander, die Ortsveränderung sei in vielerlei Hinsicht die wichtigste und grundlegendste Form von Veränderung und habe insofern Priorität über alle anderen Veränderungsarten. Der Autor fragt in einem ersten Schritt nach der Relevanz dieser keineswegs selbstverständlichen Prioritätsthese und ihrer Diskussion in Physik VIII. Er zeigt, dass Aristoteles' Argumente für diese These - im Gegensatz zur bisherigen Deutung - eine wesentliche Funktion im größeren Kontext von Physik VIII und der aristotelischen Naturphilosophie allgemein erfüllen.


Book
Gas Flows in Microsystems
Authors: ---
ISBN: 3039215434 3039215426 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

The last two decades have witnessed a rapid development of microelectromechanical systems (MEMS) involving gas microflows in various technical fields. Gas microflows can, for example, be observed in microheat exchangers designed for chemical applications or for cooling of electronic components, in fluidic microactuators developed for active flow control purposes, in micronozzles used for the micropropulsion of nano and picosats, in microgas chromatographs, analyzers or separators, in vacuum generators and in Knudsen micropumps, as well as in some organs-on-a-chip, such as artificial lungs. These flows are rarefied due to the small MEMS dimensions, and the rarefaction can be increased by low-pressure conditions. The flows relate to the slip flow, transition or free molecular regimes and can involve monatomic or polyatomic gases and gas mixtures. Hydrodynamics and heat and mass transfer are strongly impacted by rarefaction effects, and temperature-driven microflows offer new opportunities for designing original MEMS for gas pumping or separation. Accordingly, this Special Issue seeks to showcase research papers, short communications, and review articles that focus on novel theoretical and numerical models or data, as well as on new experimental results and technics, for improving knowledge on heat and mass transfer in gas microflows. Papers dealing with the development of original gas MEMS are also welcome.

Keywords

preconcentrator --- UV absorption --- n/a --- bearing characteristics --- ultraviolet light-emitting diode (UV LED) --- resonant micro-electromechanical-systems (MEMS) --- heat sinks --- measurement and control --- flow choking --- mixing length --- gas flows in micro scale --- BTEX --- kinetic theory --- PID detector --- ethylbenzene and xylene (BTEX) --- computational fluid dynamics (CFD) --- OpenFOAM --- direct simulation Monte Carlo (DSMC) --- thermally induced flow --- vacuum micropump --- miniaturization --- gaseous rarefaction effects --- modelling --- volatile organic compound (VOC) detection --- supersonic microjets --- slip flow --- Nano-Electro-Mechanical Systems (NEMS) --- micro-mirrors --- micro-scale flows --- microfabrication --- Knudsen pump --- microfluidic --- microfluidics --- hollow core waveguides --- capillary tubes --- gas mixing --- advanced measurement technologies --- DSMC --- Micro-Electro-Mechanical Systems (MEMS) --- microchannels --- miniaturized gas chromatograph --- Pitot tube --- multi-stage micromixer --- analytical solution --- pressure drop --- micro-mixer --- thermal transpiration --- photoionization detector --- FE analysis --- gas mixtures --- spectrophotometry --- Knudsen layer --- pulsed flow --- Fanno flow --- integrated micro sensors --- binary gas mixing --- modified Reynolds equation --- rarefied gas flow --- rarefied gas flows --- backward facing step --- modular micromixer --- fractal surface topography --- underexpansion --- electronic cooling --- splitter --- compressibility --- photolithography --- Benzene --- out-of-plane comb actuation --- gas sensors --- aerodynamic effect --- fluid damping --- toluene --- control mixture composition


Book
Explaining the Cosmos
Author:
ISBN: 1282458280 9786612458286 1400827450 9781400827459 Year: 2008 Publisher: Princeton Princeton University Press

Loading...
Export citation

Choose an application

Bookmark

Abstract

Explaining the Cosmos is a major reinterpretation of Greek scientific thought before Socrates. Focusing on the scientific tradition of philosophy, Daniel Graham argues that Presocratic philosophy is not a mere patchwork of different schools and styles of thought. Rather, there is a discernible and unified Ionian tradition that dominates Presocratic debates. Graham rejects the common interpretation of the early Ionians as "material monists" and also the view of the later Ionians as desperately trying to save scientific philosophy from Parmenides' criticisms. In Graham's view, Parmenides plays a constructive role in shaping the scientific debates of the fifth century BC. Accordingly, the history of Presocratic philosophy can be seen not as a series of dialectical failures, but rather as a series of theoretical advances that led to empirical discoveries. Indeed, the Ionian tradition can be seen as the origin of the scientific conception of the world that we still hold today.

Keywords

Philosophie ancienne. --- Sciences anciennes. --- Sciences --- Philosophy, Ancient. --- Science, Ancient. --- Science --- Natural science --- Natural sciences --- Science of science --- Ancient philosophy --- Greek philosophy --- Philosophy, Greek --- Philosophy, Roman --- Roman philosophy --- Ancient science --- Science, Primitive --- Histoire. --- History. --- History --- Pre-Socratic philosophers. --- Pre-Socratics --- Presocratic philosophers --- Presocratics --- Philosophers --- Absolute (philosophy). --- Alcmaeon of Croton. --- Alexander of Aphrodisias. --- Allusion. --- Ambiguity. --- Analogy. --- Anaxagoras. --- Anaximander. --- Anaximenes. --- Antidosis. --- Apeiron (cosmology). --- Aristotle. --- Atomism. --- Causality. --- Chemical element. --- Chemical formula. --- Classical element. --- Coeus. --- Concept. --- Contradiction. --- Cosmogony. --- Cratylus. --- Crius. --- Cronus. --- Democritus. --- Diogenes of Apollonia. --- Dualism (philosophy of mind). --- Dualism. --- Eleatics. --- Emergence. --- Empedocles. --- Empirical evidence. --- Essence. --- Existence. --- Explanandum. --- Explanation. --- Explication. --- Fallacy. --- First principle. --- Four causes. --- Greek Philosophy. --- Hippias. --- Hypothesis. --- Ignoratio elenchi. --- Inference. --- Inquiry. --- Instance (computer science). --- Isocrates. --- Leucippus. --- Lucretius. --- Material monism. --- Meteorology. --- Monism. --- Multitude. --- Mythology. --- Natural philosophy. --- Natural science. --- On Generation and Corruption. --- On the Heavens. --- Ontology. --- Ousia. --- Parmenides. --- Peripatetic school. --- Phenomenon. --- Philolaus. --- Philosopher. --- Philosophical theory. --- Philosophy. --- Pre-Socratic philosophy. --- Premise. --- Principle. --- Process philosophy. --- Prose. --- Pythagoreanism. --- Quantity. --- Rarefaction. --- Reality. --- Reason. --- Science. --- Scientific method. --- Scientist. --- Sophist. --- Substance theory. --- Teleology. --- Test theory. --- The Philosopher. --- Theogony. --- Theophrastus. --- Theoretical physics. --- Theory of Forms. --- Theory of change. --- Theory. --- Thomas Kuhn. --- Thought. --- Timaeus (dialogue). --- Trace Amounts. --- Treatise. --- Unity of opposites. --- World view. --- Xenophanes.

Listing 1 - 5 of 5
Sort by